A woman can be my mother.
A woman can be my wife.
A woman can be my daughter.
They are three separate people but have different relationships to me, but yet are all women.
Likewise...
Horses can be working horses on a farm.
A horse can be a draft horse in an industrial setting.
A horse can serve in an urban setting with the police.
A horse can be breeding stock.
A horse can be racing stock.
A horse can perform in a circus.
A horse can perform in the show ring.
A horse can serve as a therapy animal.
And a horse can be a pet.
All of these are different types of horses but all serve different purposes and certainly not all reside on a farm and are a made-up word...
Certain cultures practice cannibalism and eating horses so I guess there is yet another similarity between the two.
For some reason this comes to mind now...